摘要
Abstract
In order to explore the properties of fiber modified asphalt mixture,the effects of different polypropylene fiber content on the mechan-ical properties and road performance of asphalt mixture were tested and analyzed.The results show that polypropylene fiber can effectively im-prove the Marshall stability of asphalt mixture,the maximum increase is 22.65%.Polypropylene fiber has a significant improvement effect on the high temperature stability,low temperature flexural tensile strength,residual stability and freeze-thawing splitting strength of asphalt mix-ture.The optimal fiber content is 0.3%,which increases 21.23%,17.2%,33.33%and 55.26%,respectively.According to various test indexes,the comprehensive performance of polypropylene fiber modified asphalt mixture with 0.3%fiber content is the best.关键词
聚丙烯纤维/改性沥青混合料/力学性能/路用性能Key words
Polypropylene fiber/Modified asphalt mixture/Mechanical properties/Road performance分类
交通工程
